Re: [PSUBS-MAILIST] Re: Your Message Sent on Mon, 25 Sep 2000 08:51:05 -0600

["Dale" <heinzind@cadvision.com>]

-----Original Message-----
From: Ray Keefer <Ray.Keefer@west.sun.com>
To: personal_submersibles@psubs.org <personal_submersibles@psubs.org>
Date: Monday, September 25, 2000 10:26 AM
Subject: [PSUBS-MAILIST] Re: Your Message Sent on Mon, 25 Sep 2000
08:51:05 -0600


>Hi Dale,
>
>Very good progress!
>
>Just to stimulate fine build checkout discussion:
>
>How did you detect the leak?
>How did you get the pressure compensation for the motors?
>How are you going to weigh your sub?
>What are you plans for in water testing?


leaks were detected using soapy water on all of the fittings, when pressure
was applied.... this one I could hear though...

Pressure compensation was my own design.. I modified an air regulator, and
took outside pressure from the same line I am using for my depth gauge.. I
ran the compensation down the stainless motor rotating shafts(the ones used
to control the rotation of the motor from inside the sub.)  This way I am
using a completely stock motorglide trolling motor, and if something happens
to it, I only have to go and buy another one, and put it on..

My sub will be weighed at a scale used to weigh large trucks.  I will weigh
my truck and trailor, then put the sub on the trailor, and weigh the whole
thing again.... the difference will be the weight of the sub..

My plans for testing this fall, will be -- use a large trac-hoe to lift the
sub into a small pond (actually a man made pond, solid bottom) that is about
25 feet deep.  it will stay hooked to the trac-hoe until I find out if I
have any leaks, and the boyancy is correct.. If I have any problems, It will
lift me out of the water..

Before I use the sub to any depth, I am also going to test it to 400 feet
for 1 hr, unmanned, but that will have to wait until spring..this first test
will be to get it wet, and check if all the systems work properly..


dale.